The dynamical equations related to Kepler motion are scale-invariant. This means that the dynamical model itself, described by these equations is space scale-invariant: it should work at the microscopic level just as well as it works at the macroscopic level. Why then the first quantization? Is it telling something we could not read by the classical physics? The Bohr’s case of quantization, which initiated the first quantization, is presented here as a Newtonian instance of natural philosophy: the force characterizing the model has to account for some experimental observations related to motion. It turns out that the only thing worth considering from the side of quantum revolution is the inspiration it could bring, for instance in problems of astrophysics, the branch of physics which actually helped start the quantum theory. That inspiration existed historically, but was lost due to the attitude of our spirit, which tends to see things “quantal” different from, and more fundamental than, things “classical.” This work aims to present all things in a single classical order, and thus explain some of the present-day quantum theoretical findings.